Toxicity of cadmium to Caenorhabditis elegans (Nematoda) in whole sediment and pore water - The ambiguous role of organic matter

Hoss S, Henschel T, Haitzer M, Traunspurger W, Steinberg CEW (2001)
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 20(12): 2794-2801.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
A bioassay using the nematode Caenorhabditis elegans was performed with natural sediment that had been spiked with organic matter (36-117 g total organic carbon/kg dry wt) and cadmium (Cd: 10-1,200 mg/kg wet wt). Whole sediment and pore water were tested to study the influence of particulate organic matter (POM) and dissolved organic matter (DOM) on Cd toxicity and to compare the toxicity of the two sediment phases. Toxicity was measured with nematode growth as test parameter. No toxicity was observed if sediment concentrations of Cd were below concentrations of acid-volatile sulfides (AVS). At higher Cd concentrations. toxicity in whole sediment and pore water increased with increasing organic content. This phenomenon was explained by an increase of DOM concentrations in organically enriched treatments and a resulting solubilization of Cd due to Cd complexation by DOM. Because DOM did not alter the bioavailability of Cd for the nematodes, bacteria, serving as food, might have functioned as vectors for Cd-DOM complexes, so that Cd could have become available in the gut of the nematodes. A higher toxicity in whole sediment compared to in pore water in the organically enriched treatments indicated that POM-bound Cd may have contributed to the toxicity of Cd to C. elegans.
Stichworte
sediment; Caenorhabditis elegans; pore water; organic matter; cadmium
Erscheinungsjahr
2001
Zeitschriftentitel
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
Band
20
Ausgabe
12
Seite(n)
2794-2801
ISSN
0730-7268
eISSN
1552-8618
Page URI
https://pub.uni-bielefeld.de/record/1615723

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Hoss S, Henschel T, Haitzer M, Traunspurger W, Steinberg CEW. Toxicity of cadmium to Caenorhabditis elegans (Nematoda) in whole sediment and pore water - The ambiguous role of organic matter. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY. 2001;20(12):2794-2801.
Hoss, S., Henschel, T., Haitzer, M., Traunspurger, W., & Steinberg, C. E. W. (2001). Toxicity of cadmium to Caenorhabditis elegans (Nematoda) in whole sediment and pore water - The ambiguous role of organic matter. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY, 20(12), 2794-2801. doi:10.1897/1551-5028(2001)020<2794:TOCTCE>2.0.CO;2
Hoss, S., Henschel, T., Haitzer, M., Traunspurger, W., and Steinberg, C. E. W. (2001). Toxicity of cadmium to Caenorhabditis elegans (Nematoda) in whole sediment and pore water - The ambiguous role of organic matter. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 20, 2794-2801.
Hoss, S., et al., 2001. Toxicity of cadmium to Caenorhabditis elegans (Nematoda) in whole sediment and pore water - The ambiguous role of organic matter. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY, 20(12), p 2794-2801.
S. Hoss, et al., “Toxicity of cadmium to Caenorhabditis elegans (Nematoda) in whole sediment and pore water - The ambiguous role of organic matter”, ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY, vol. 20, 2001, pp. 2794-2801.
Hoss, S., Henschel, T., Haitzer, M., Traunspurger, W., Steinberg, C.E.W.: Toxicity of cadmium to Caenorhabditis elegans (Nematoda) in whole sediment and pore water - The ambiguous role of organic matter. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY. 20, 2794-2801 (2001).
Hoss, S, Henschel, T, Haitzer, M, Traunspurger, Walter, and Steinberg, CEW. “Toxicity of cadmium to Caenorhabditis elegans (Nematoda) in whole sediment and pore water - The ambiguous role of organic matter”. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 20.12 (2001): 2794-2801.

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